Power-transmission device.



E. BRADEN.

POWER TRANSMISSION DEVCE.

APPLICATION F1LED1uLY27.1914.

Patentod Aug. 29, 1916.

2 SHEETS*SHEET l.

m mam E. BRADEN.

POWER TRANSMISSION DEVICE.

APPLICATION FILED luLY 27.1914.

1,196932, Patented Aug. 29, 1916.

2 SHEETS-SHEET 2.

ELMEB. BRADEN, OF QUINCE', ILLINOIS, ASSIGNOR T0 WILL JI. BUFF, 0FQUHWCY,

mentors. row'rnsirission nevica.

iaeaaae.

Specification of Letters Patent.

' Fatented Aug.. 89, 191th..

Application led July 27, 1914. Serial No. 853,474.

To all whom t may concern:

Be it known that I, ELMER BRAnEN, a citizen of the United States ofAmerica, a resident of Quincy, in the county of Adams and State ofIllinois, have invented certain new and useful Improvements inPower-,Transmission Devices, of which the followlng 1s a full, clear,and exact description, reference being had to the accompanying drawings,forming a part of this specification.

My invention relates to a power1 transmission device, one of theobjects'being .to produce a very eiiicient means for intermittentlytransmitting the movement of a drive shaft to a driven shaft. v

Another object is to provide means for automatically stopping the driveshaft at a predetermined point when the power transmission member isreleased from the driving member.

The invention also includes certain details of construction which willbe hereinafter dep scribed.

Figure I is a top or plan View of iny power transmission device, thegearing being shown diagrammatically. Fig. II 1s a detail view,illustrating the means for stopping the driven shaft. Fig. III is asection taken approximately on the line III-III, Fig. IV. Fig. IV is aside elevation, partly in section, of the parts shown in Fig. I. Fig. Vis a horizontal section illustrating the segmental drive wheel and thetransmisison wheel.

fIhe preferred form of my invention, as shown in the accompanyingdrawings, comprises a constantly rotating power shaft I), a constantlyrotating drive shaft D geared to the power shaft, and a driven shaft Dadapted to rotate intermittently in response to the movement of thedrive shaft D. All of these shafts are rotatably fitted to upper andlower bearing frames A and B. The drive shaft D is rotated continuouslythrough the medium of a pinion 1 lixed to the lower end of the powershaft P and a gear wheel 2 meshing with said pinion, the gear Wheel 2being secured to the lower end of the drive shaft D. A drive member 3secured to the upper portion of the drive shaft, is preferably asegmental gear wheel adapted to mesh with a transmission wheel 4 splinedto the driven shaft D. The drive wheel 3 rotates continuousl and thetransmission wheel 4 is shifted into engagement with said drive wheel atregular intervals to' impart an intermittent movement to the drivenshaft D.

The means for shiftin the transmission wheel 4 comprises a shi ter lever5 strad` dling the hub of the transmission wheel and fitted to a collar6 loosely secured to said hub. 'Ihe shifter lever 5 is pivoted at 6 toan arm 7 supported between collars on the shafts P and D. A verticallymovable shifter member 8, slidably fitted to the arm 7, 1 s providedwith a cam roller or pin 9 which extends into a groove 0 formed in thecam 11. The cam 11 is prntbvided with a shoulder 12 adapted to passunderthe cam roller 9 so as to rock the shifter lever 5 thereby shifting thetransmission wheel triiito the path of the rotating drive wheel 3. rlhecam 11 1s lo osely supported on the drive shaft D, and it lis driven ata comparatively low rate O f speed by means of a train of gearing con#sisting of a pinion 13 secured to the drive shaft D, a gear wheel 14meshing with said pinion, and a second pinion 15 secured to the gearwheel 14 and meshing with a gear 16, the latter being fixed to the cam11.

A gear wheel 17 secured to the upper end of the driven shaft D mesheswith a very large gear wheel, or gear ring 18, the object being to drivethe large gear 18 a predetermined distance at regular intervals. Thelarge gear wheel 18 is adapted to be secured to a rotatable pasteurizertank andthis gear wheel 18 is driven intermittently through the mediumof the transmission wheel 4 and driven shaft D. The device I have shownin illustrating the invention is particularly adapted to drive largepasteurizer tanks predetermined distances at regular intervals,permitting the tanks to remain at rest for the purpose of loading andunloading the pasteurizing compartments. For example, the parts may beso timed that the transmission wheel 4 will make one revolution in oneminute, while the cam 11 will make one complete revolution in twentyminutes, and in this event the transmission wheel 4 will remain idle 19minutes at which time the cam shoulder 12 passing under the cam roller9, will lift the transmission wheel into the path of the segmental drivewheel 3. The drive wheel 3 will then turn the transmission wheel onecomplete revolution in one minute, and when the blank face of the drivewheel 3 faces the teeth of thet tsim'ssion wheel 4 the latter will bemoved downwardly by the cam 11.

The springs Y20 and 21 surrounding the driven shaft D and located aboveand below the transmission wheel 4 are for the purpose of imparting aninitial impulse to the wheel 4 when it is shifted to or from the drivewheel 3. When thewheels 3v and 4-are engaged with each other the spring20 tends to disengage them, and when the wheels are disengaged as shownin Fig. IV the spring 2l tends to move the transmission wheel intoengagement with the drive wheel. The object is to positively release thetransmission wheel when it is to beshifted in either direction.

The means for locking the driven shaft D', when the transmission wheel 4is shifted from the drive wheel, comprises a rotatable I stop arm 22fixed to the driven shaft D',

and a segmental stop member 23 loosely mounted on the drive shaft D andfixed to the cam 11. The segmental stop Vmember 23 is provided with anarcuate abutment face 25 24 concentric with the axis of the drive shaft,and the stop arm 22 is provided with a concave abutment face 25corresponding to said arcuate face. The segmental stop member 23 securedto the cam 11 travels at a much lower rate of speed than the drive yshaft D, and when the cam is positioned to engage the transmission wheel4 with the drive wheel 3, the segmental stop member 23 is positionedwhere it will release the stop arm 22. The driven shaft D is thusunlocked and permitted to make one com-l plete revolution in res onse tothe movement of the drive sha pletion of this movement the stop arm 22,carried b the driven shaft, is again positioned w ere its concaveabutment face 25 will engage the segmental stop member 23. Thetransmission wheel 4 may be lifted by the cam and shifter lever beforethe teeth on the segmental drive gear 3 reach the plane of thetransmission wheel, and the latter may be moved downwardly after theteeth of the segmental drive gear leave the transmission wheel. Noaccuracy Y is required in timing the operation of the cam 11 and shifterlever 5 since the transmission wheel may be shifted while the blank faceof the segmental drive gear is ,facing the drive shaft D. The lockingelements 22 455 and 23 positively lock the transmission wheel againstrotation at a predetermined point, regardless of the movement of the camand shifter lever 5, the object being to insure the proper matchingrelation between the transmission wheel and the segmental row of teethon the drive wheel 3.

I claim 1. A' power transmission device com ris ing a drive shaftprovided with a ive gear, a driven shaft, a transmission wheel adaptedoccup where it will mesii7 Upon the coman operative position with andtransmit the movement of said drive gear to said driven shaft, and ashifter for shifting said transmission wheel into and out of the path ofsaid drive gear so as to intermittently transmit the movement of saiddrive gear to said drive shaft, said shifter being operable 1n responseto movementsl of said drive shaft.

2. A power transmission device comprising a drive shaft, a driven shaft,a transmission member adapted to occupy an o erative position where itwill transmit t e movement of said drive shaft to said driven shaft, apivotally supported shifter arm for 30 shifting said transmission memberto intermittently transmit themovement of said drive shaft to saiddriven shaft, and a cam operable by said drive shaft adapted tooscillate said shifter arm at regular intervals.

3. A power transmission device comprising a drive shaft, a segmentaldrive gear secured to said drive shaft, a driven shaft, a transmissionwheel splined to said driven shaft adapted to be moved into and out ofthe path of said se ental drive gear, and a shifter for shi ing saidtransmission wheel to intermittently transmit the movement of said driveshaft to said driven shaft, said shifter being operable in ree sponse tothe movements of said drive shaft.

4. A power transmission device comprising a drive shaft, a 4drivenshaft, a transmisslon wheel adapted to occupy an operative positionwhere it will transmit the movement of said drive shaft to said drivenshaft, a shifter for shiftin said transmission wheel to intermittent ytransmit the movement of said drive shaft to said driven shaft, and acam operable by said drive 10 shaft adapted to move said shifter atregular intervals, said shifter being secured to said cam andtransmission wheel so as to positively shift said transmission .wheel toand from its operative position. 11

5. A power transmission device comprising a power shaft, a drive shaftIgeared to said power shaft, a cam geared to and sup- Aported by saiddrive shaft, said cam being driven at a lower rate of speed than said 11drive shaft, a drive gear secured to said drive shaft, a driven shaft, atransmission wheel splined to said driven shaft, and a shifter arm formoving said transmission wheel into and out of engagementl with said 12drive gear, the saidA cam being provided with means for operating saidshifter arm at regular intervals.

6. A power transmission device comprising a drive shaft, a driven shaft,a trans- 12 mission member for transmitting the movement of said driveshaft to said driven shaft, a shifter for moving said transmissionmember to intermittently transmit the movement of said drive shaft tosaid driven 13.

moesen shaft, a rotatable device for operating said shifter, and powermechanism for rotating said rotatable device at a lower rate of speedthan said drive shaft, whereby the drive shaft is turned a number ofrevolutions while the transmission member occupies its inoperativeposition.

7. A power transmission device comprising a drive shaft, a driven shaft,a transmission member for transmitting the movement' of said drivelshaft to said driven shaft, a shifter for moving said transmissionmember to intermittently transmit the movement of said drive shaft tosaid driven shaft, a cam for operating saidshifter at regular intervals,and power mechanism for rotating said cam at a lower rate of speed thansaid drive shaft, whereby, the drive shaft is turned a number ofrevolutions while the transmission member occupies its inoperativeposition.

8. A power transmission device comprising a drive shaft, a driven shaft,a transmission member for transmitting the movement of said drive shaftto said driven shaft, a shifter for moving said transmission member tointermittently transmit the movement of said drive shaft to said drivenshaft, a cam for operating said shifter at regular intervals, powermechanism for rotating said cam at a lower rate of speed than said driveshaft, whereby the drive shaft is turned a number of revolutions whilethe transmission member occupies its inoperative position, and rotatablestop members for automatically stopping said driven shaft when thetransmission member is shifted from its operative position, one of saidstop members bein secured to said cam so as to rotate therewith and theother stop member ling'carried by said driven shaft.

9. A power transmission device comprising a drive shaft, a driven shaft,a transmission member adapted to occupy an operative position where itwill transmit the movement of said drive shaft to said driven shaft, ashifter for shifting said transmission member to intermittently transmitthe movement of said drive shaft to said driven shaft, a rotatable stopmember operable by said drive shaft, and a rotatable stop member securedto said driven shaft, said stop members being adapted to engage eachother to stop the driven shaft when the transmission device is shiftedfrom its operative position. 10. A power transmission device comprisinga drive shaft, a driven shaft, a transmission member adapted to occupyany operative position where it will transmit the movement of said driveshaft to said driven shaft, a shifter for shifting said transmissionmember to intermittently transmit the movement of said drive shaft tosaid driven shaft, and rotatable stop members fitted to said drive shaftand dri-ven shaft adapted to engage each otherI to stop the driven shaftwhen the transmission device is shifted from its operative position, oneof said rotatable vstop members having an arcuate abutment faceconcentric with its axis and the other rotatable stop member beingprovided with a concave abutment face corresponding to said arcuateface.

11. A power transmission device comprising adrive shaft, a driven shaft,atransmisposition where it will transmit the moveyment of said driveshaft to said driven shaft, .a shifter for shifting said transmissionmember to intermittently transmit the movement of said drive shaft tosaid driven shaft, a rotatable stop arm carried by said driven shaft,and a segmental stop member operable by said drivel shaft, saidrotatable stop arm being provided with a' concave abutment face adaptedto engage said segmental stop member when the said transmission'deviceis shifted from its operative position. l

12. shaft provided with a gear wheel, a transmission wheel movable intoand out of engagement with said gear wheel, a spring tending to shiftsaid transmission wheel into engagement with said gear wheel when saidwheels are disengaged from each other, and a second spring tending toshift said transmission wheel away from said gear wheel when said wheelsare engaged with each other.

ELMER BRADEN. lln the presence oflFRANK A. LUBLU, J. MWINTERS.

A transmission device comprising a

